Spanish un

← Spanish uno (mention)

← Proto-Indo-European *óynos (inherited)

← Old Latin oinos (inherited)

← Proto-Italic *oinos (inherited)

← Latin ūnus (inherited)

→ Chamorro un (borrowed)

→ Esperanto unuj (mention)

→ Papiamentu unu (derived)

→ Papiamentu diesun (derived)